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Replacement Car Alternator Specification Example for Racing Teams: Drilled and Slotted

Source:Air Auto Filter / Time:2026-09-18

Replacement Car Alternator Specification Example for Racing Teams: Drilled and Slotted

This is a worked specification for replacement car alternator in a drilled and slotted programme. It is the document we would send a buyer who asks what exactly they are getting: the material, the dimensions that are actually controlled, the finish, and the checks that happen before anything is packed.

The drilled and slotted version exists because the duty cycle on racing teams is not the same as on a showroom vehicle. Where the two are specified identically, something fails later — usually a fitment that looked right on paper and failed on the bench.

Replacement Car Alternator

Example specification

ItemReplacement Car Alternator
ApplicationRacing Teams
VersionDrilled and Slotted
Base materialEPDM Rubber
Controlled dimensions4 key dimensions, recorded per lot
Tolerance band±0.1 mm
Finishzinc plated
MOQ3,000 pieces per specification
Sampling10 working days, 3 days per revision
ComplianceDOT

How the example is built up

  1. Start from the duty cycle, not from the catalogue photograph.
  2. Fix the base material in writing — EPDM Rubber, in this example.
  3. List the dimensions that are actually controlled and the tolerance on each.
  4. Name the finish and what it has to survive.
  5. State the inspection level and who pays when a lot fails.

Replacement Car Alternator example

Processes involved

  • anodising
  • laser cutting
  • injection moulding
  • CNC machining
  • heat treatment
  • robot welding

Where this example applies

Programmes that run drilled and slotted most often specify this build for racing teams. Related applications include rental motorcycles, long-haul trucks, emergency vehicles, assembly programmes, municipal fleets.

Checks before packing

  • Dimensional report against the approved drawing.
  • AQL 2.5 sampling on the finished lot.
  • Finish inspection under agreed lighting.
  • Carton drop test on the first lot of a new packing specification.

Questions buyers ask

Can you match an existing sample?

Send a sample and we will reverse-engineer the specification, then produce a counter sample for approval before any bulk starts.

What testing is included?

Standard lots ship with dimensional and hardness reports. DOT documentation is issued with the shipment when your market requires it.

What is the minimum order quantity?

The standard MOQ is 3000 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.

Do you handle mixed containers?

Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 3000 pieces per line.

Send the specification you are working to and we will confirm what we can match, what we would change and why.

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